In my interpretation of "being your own favorite bass player" I take it to mean you enjoy what you do more than you enjoy what other players do.
This is different, in my opinion, than saying you thoroughly enjoy your own style and listening to lines you create. It seems to imply that you feel this way over and above your feelings of other players.
Since that's how I interpret "my own favorite", it also implies that because you find what you do to be more appealing that what others do, the likelihood that what others do will inspire you is diminished. At that point, you are your own inspiration which pretty much means you've decided that "where you're at" is as far as you need to go.
I suppose I could pose a qualifying question and ask; If you are your own favorite bass player, how do you think you'd find inspiration or examples of things that interest you enough to push yourself to new/different levels?
OR - does being your own favorite player imply that you not only enjoy your own playing more than you enjoy others but you've also decided that where you are is as far as you need to go?